In the diagram above, ∠PRQ = 90°, ∠QPR = 30° and /PQ/ = 10 cm. Find y.
- 6cm
-
5cm
- 4cm
- 3cm
- 2cm
The correct answer is: B
Explanation
\(\sin 30° = \frac{y}{10}\)
\(y = 10 \sin 30° = 10 \times 0.5 = 5 cm\)